Serpe, Loredana, Lorenzo Pradelli, and Mario Eandi. “Tramadolo: Profilo Farmacologico, Terapeutico E Farmacoeconomico”. Farmeconomia. Health economics and therapeutic pathways 5, no. 3 (September 15, 2004): 151–162. Accessed July 23, 2025. https://provafe.seedstm.com/index.php/FE/article/view/794.